Cannot get Google Map API v3 to display - google-maps

Question

Update: Based on the OVER_QUERY_LIMIT recommendation, I found a potentially promising solution that I will try tonight.
Initially I could not get a Google Map API v3 to display on my PC. The same code worked on an Amazon server. I've moved to Rackspace and now it doesn't display. Here's the code I'm using:
<script type="text/javascript"
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBiv-nrDCYEEGzD1mk3jAfapfrBH878pqc&sensor=true">
</script>
<script>
var geocoder;
var map;
function initialize() {
geocoder = new google.maps.Geocoder();
var phpAddressInit = "<?php echo $mapAddress ?>";
//document.write("phpAddressInit: " + phpAddressInit);
//var latlng = new google.maps.LatLng(-34.397, 150.644);
var latlng = new google.maps.LatLng(33.5750, -117.7256);
var mapOptions = {
zoom: 10,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions);
geocoder.geocode( { 'address': phpAddressInit}, function(results, status) {
//alert("---address3: " + phpAddressInit);
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});
} else {
alert('Geocode was not successful for the following reason: ' + status);
}
});
}
function codeAddress(control,ctrlAddress) {
//alert("---in codeAddress; " + "control: " + control
// + "ctrlAddress: " + ctrlAddress);
//var address = document.getElementById('address').value;
//aws.push
var address;
if ( control == 1 )
{
address = document.getElementById('address').value;
}
else
{
address = ctrlAddress;
}
geocoder = new google.maps.Geocoder();
//alert("---address1: " + address);
geocoder.geocode( { 'address': address}, function(results, status) {
//alert("---address2: " + address);
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});
} else {
alert('Geocode was not successful for the following reason: ' + status);
}
});
}
</script>
...
I've googled this for several hours, tried several different examples, but it won't display. What am I missing?

Answer 1

Seb P made me aware it is working now. Thank you, it is working now.
Still using the original code that didn't work so I can't say with confidence that the problem is fixed. Looking through links associated with OVER_QUERY_LIMIT, Rackspace seems to group users together to use the same IP leading to this error.
None of this is confirmed but that seems to fit with what I am seeing. It would be nice if someone could shed more light on this so that this problem can be avoided.